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SORBTEX bearing pad Specifications

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SORBTEX

Time tested bearing pads for bridges and buildings.

 

Made of high-quality cotton-polyester duck cloth that has been impregnated with oil resistant synthetic rubber and treated with mold and mildew inhibitors.
Manufactured to the specifications of MIL-C-882E, 27 January 1989.
1. Hardness (Shore A)...................................................90±5
2. Compression - Minimum Ultimate Strength....................10,000 psi
3. a. Shear Modulus (G).................................................450 psi
Based on tests conducted according to ASTM D4014-987.
App. A1 at pure shear strain of 33 percent.
b. Apparent Shear Modulus (GA).....................................400, 850, 1150 & 1325 psi
At compressive stresses of 500, 000, 2000 and 3000 psi. Based on shear
stress measurements made at 70°F to 80°F at a shear plus slip strain of 50 percent.
4. Permanent Set...........................................................2±1%
5. Volume swell per FED-STD-601 (Ref.).........................25% max
6. Dielectric Strength, ASTM D 149 (VDC/mil.)..................135
7. Volume Resistivity, ASTM D 257 (ohm°cm x 1010)..........3.3
8. thickness tolerance.....................................................%5 of thickness
9. Plan Size tolerance.....................................................±1/8 in.
For closer tolerances consult you BC Rubber sales representative.

 

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